Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['8867', '765', 'I', 'k', '2817', '7911', '6677']

8867, 765, 9, 11, 2817, 7911, 6677